In another case, if your disk is badly damaged and is beyond the repair ability of First Aid, you would also see the error message. Besides the internal hard drive, First Aid failure can also occur with a USB flash drive, SD card, or external hard drive. This usually happens when you try to fix the Macintosh HD, and the error message you receive could also be "The volume Macintosh HD could not be repaired". In one case, the reason why Disk Utility stops repairing is that the First Aid failed.
To further describe the problem, you have received the error message, but you still can open or copy files on the disk, you just can't save changes to files on it. On some occasions, when you try to repair the disk with First Aid, you will receive an error message saying "Can't repair the disk". It can be applied to various scenarios, like apps breakdown, file corruption, external device damage, or computer won't start up normally.īut you should also know that Disk Utility can't detect or repair all disk problems. Overview of macOS Can't Repair the Diskįirst Aid in Disk Utility is designed for users to repair the disk and other storage devices. Disk Utility enables users to mount and unmount external drives that Finder has trouble mounting, format flash drives, and hard drives to a specific format, check and repair disk errors. Some might equal Disk Utility to Disk Management in Windows system.
#MAC COMMAND LINE LIST UNMOUNTED DISKS FULL#
Full stepsĭisk Utility is a macOS built-in tool for disk erasing, formatting, and emergency repairing. Get another empty external hard drive as. Restart your Mac and boot into Single User.
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